#!/bin/bash
function loadDefaultConfiguration() {
	export "SOSGIT_CONFIGVERSION=1"
	export "SOSGIT_SETUP_USER=false"
	export "SOSGIT_SETUP_SYSTEM=false"
	export "SOSGIT_SHELL=/bin/sh"
	export "SOSGIT_MAKE=/bin/make"
	export "SOSGIT_EDITOR=/bin/nano"
	export "SOSGIT_CURL=/bin/curl"
	export "SOSGIT_GIT=/bin/git"
	export "SOSGIT_LS=/bin/ls"
	export "SOSGIT_TITLE_SUPPRESS=false"
	export "SOSGIT_TITLE_TEXT=false"
	export "SOSGIT_TMP=/dev/shm"
	export "SOSGIT_REPOS=$HOME/.sostools/git/repos"
	export "SOSGIT_UPDATEURL=https://staropensource.ddns.net/git/staropensource/sostools/raw/branch/develop/sos-git.sh"
	export "SOSGIT_REQUESTSTRING=https://staropensource.ddns.net/git/%s/%s"
	export "SOSGIT_REQUESTSTRING_REMOTE=https://%s:%s@staropensource.ddns.net/git/%s/%s"
}
function loadSystemConfigurationMigrationError() {
	echo "Your system configuration files are too old, but can't be reset."
	echo "Please update all configuration files to the new version,"
	echo "if you still want to use them."
	exit "249"
}
function loadSystemConfiguration() {
	if [ -f "/etc/sostools/git/sos-git.conf" ]; then
		export "SOSGIT_EXITSTRING=$SOSGIT_CONFIGVERSION"
		source "/etc/sostools/git/sos-git.conf"
		if [ ! "$SOSGIT_CONFIGVERSION" == "$SOSGIT_EXITSTRING" ]; then
			if [ -f "/etc/sostools/git/sos-git.conf" ] || [ -d "/etc/sostools/git/sos-git.conf" ]; then
				rm -rf "/etc/sostools/git/sos-git.conf"
				if [ ! "$?" == "0" ]; then loadSystemConfigurationMigrationError; fi
			fi
			mv "/etc/sostools/git/sos-git.conf" "/etc/sostools/git/sos-git.conf.bak"
			if [ ! "$?" == "0" ]; then loadSystemConfigurationMigrationError; fi
			if [ -f "/etc/sostools/git/sos-git.conf.d" ] || [ -d "/etc/sostools/git/sos-git.conf.d" ]; then
				rm -rf "/etc/sostools/git/sos-git.conf"
				if [ ! "$?" == "0" ]; then loadSystemConfigurationMigrationError; fi
			fi
			mv "/etc/sostools/git/sos-git.conf.d" "/etc/sostools/git/sos-git.conf.d.bak"
			if [ ! "$?" == "0" ]; then loadSystemConfigurationMigrationError; fi
			doSystemSetup "force" &> /dev/null
			echo "Your system configuration files are too old and have been reset."
			echo "A backup is named \"sos-git.conf.bak\" and \"sos-git.conf.d.bak\"."
			echo "Please update all configuration files to the new version,"
			echo "if you still want to use them."
			exit "250"
		fi
	fi
	if [ -d "/etc/sostools/git/sos-git.conf.d/" ]; then
		for file in $(/bin/ls -Aw 1 "/etc/sostools/git/sos-git.conf.d/");do
			source "/etc/sostools/git/sos-git.conf.d/${file}"
		done
	fi
}
function loadUserConfiguration() {
	if [ -f "$HOME/.sostools/git/sos-git.conf" ]; then
		export "SOSGIT_EXITSTRING=$SOSGIT_CONFIGVERSION"
		source "$HOME/.sostools/git/sos-git.conf"
		if [ ! "$SOSGIT_CONFIGVERSION" == "$SOSGIT_EXITSTRING" ]; then
			mv "$HOME/.sostools/git/sos-git.conf" "$HOME/.sostools/git/sos-git.conf.bak"
			mv "$HOME/.sostools/git/sos-git.conf.d" "$HOME/.sostools/git/sos-git.conf.d.bak"
			doUserSetup "force" &> /dev/null
			echo "Your user configuration files are too old and have been reset."
			echo "A backup is named \"sos-git.conf.bak\" and \"sos-git.conf.d.bak\"."
			echo "Please update all configuration files to the new version,"
			echo "if you still want to use them."
			exit "251"
		fi
	fi
	if [ -d "$HOME/.sostools/git/sos-git.conf.d/" ]; then
		for file in $(/bin/ls -Aw 1 "$HOME/.sostools/git/sos-git.conf.d/");do
			source "$HOME/.sostools/git/sos-git.conf.d/${file}"
		done
	fi
}
function getDefaultConfiguration() {
	# SOSGIT_CONFIGVERSION=1
	# # sos-git configuration\n
	# # this is the default configuration, you\n
	# # may make changes in sos-git.conf.d\n
	# # since they may get overriten in a future\n
	# # update.\n
	# \n
	# # Commands\n
	# ## Shell\n
	# ## DEFAULT: /bin/sh\n
	# ## You may want to set this to /bin/bash\n
	# #SOSGIT_SHELL=/bin/sh\n
	# #\n
	# ## Make\n
	# ## DEFAULT: /bin/make\n
	# #SOSGIT_MAKE=/bin/make\n
	# #\n
	# ## Editor\n
	# ## DEFAULT: /bin/nano\n
	# ## You may want to set this to /bin/vi\n
	# ## or /bin/vim or any other editor.\n
	# #SOSGIT_EDITOR=/bin/nano\n
	# #\n
	# ## cURL\n
	# ## DEFAULT: /bin/curl\n
	# #SOSGIT_CURL=/bin/curl\n
	# #\n
	# ## git\n
	# ## DEFAULT: /bin/git\n
	# #SOSGIT_GIT=/bin/git\n
	# #\n
	# ## ls\n
	# ## DEFAULT: /bin/ls\n
	# ## The ls command must be from GNU\n
	# ## coreutils, otherwise it may not\n
	# ## work correctly with sos-git.\n
	# #SOSGIT_LS=/bin/ls\n
	# \n
	# # Title\n
	# ## Suppress\n
	# ## DEFAULT: false\n
	# ## This hides the branding at\n
	# ## startup completely.\n
	# #SOSGIT_TITLE_SUPPRESS=false\n
	# #\n
	# ## Text\n
	# ## DEFAULT: false\n
	# ## This prints the branding\n
	# ## at startup in normal text.\n
	# #SOSGIT_TITLE_TEXT=false\n
	# \n
	# # Temp\n
	# # DEFAULT: /dev/shm\n
	# # The temporary directory.\n
	# # NO TRAILING SLASH AT THE END!\n
	# #SOSGIT_TMP=/dev/shm\n
	# \n
	# # Repository save directory\n
	# # DEFAULT: \$HOME/.sostools/git/repos\n
	# # The directory where your downloaded\n
	# # repositories are stored.\n
	# # NO TRAILING SLASH AT THE END!\n
	# # NO ~, USE \$HOME INSTEAD!\n
	# #SOSGIT_REPOS=\$HOME/.sostools/git/repos\n
	# \n
	# # Internet\n
	# ## Update URL\n
	# ## DEFAULT: https://staropensource.ddns.net\n
	# ##          /git/staropensource/sostools\n
	# ##          /raw/branch/master/sos-git.sh
	# ## The update URL, from where sos-git gets\n
	# ## updates. The save location will be\n
	# ## determined from the command line arguments.\n
	# #SOSGIT_UPDATEURL=https://staropensource.ddns.net/git/staropensource/sostools/raw/branch/develop/sos-git.sh\n
	# #\n
	# ## Request string\n
	# ## DEFAULT: https://staropensource.ddns.net\n
	# ##          /git/%s/%s\n
	# ## String is used for making requests and\n
	# ## downloading repositories. First %s is user,\n
	# ## second %s is the repository.
	# ## NO TRAILING SLASH AT THE END!\n
	# #SOSGIT_REQUESTSTRING=https://staropensource.ddns.net/git/%s/%s\n
	# #\n
	# ## Remote request string\n
	# ## DEFAULT: https://%s:%s@staropensource.ddns.net/%s/%s
	# ## String is used for remoteauth, that updates\n
	# ## the remote string in git. First %s is username,\n
	# ## second %s is password, third %s is user and\n
	# ## fourth %s is the repository.\n
	# ## NO TRAILING SLASH AT THE END!\n
	# #SOSGIT_REQUESTSTRING_REMOTE=https://%s:%s@staropensource.ddns.net/%s/%s
	export "SOSGIT_EXITSTRING=SOSGIT_CONFIGVERSION=1\n# sos-git configuration\n# this is the default configuration, you\n# may make changes in sos-git.conf.d\n# since they may get overriten in a future\n# update.\n\n# Commands\n## Shell\n## DEFAULT: /bin/sh\n## You may want to set this to /bin/bash\n#SOSGIT_SHELL=/bin/sh\n#\n## Make\n## DEFAULT: /bin/make\n#SOSGIT_MAKE=/bin/make\n#\n## Editor\n## DEFAULT: /bin/nano\n## You may want to set this to /bin/vi\n## or /bin/vim or any other editor.\n#SOSGIT_EDITOR=/bin/nano\n#\n## cURL\n## DEFAULT: /bin/curl\n#SOSGIT_CURL=/bin/curl\n#\n## git\n## DEFAULT: /bin/git\n#SOSGIT_GIT=/bin/git\n#\n## ls\n## DEFAULT: /bin/ls\n## The ls command must be from GNU\n## coreutils, otherwise it may not\n## work correctly with sos-git.\n#SOSGIT_LS=/bin/ls\n\n# Title\n## Suppress\n## DEFAULT: false\n## This hides the branding at\n## startup completely.\n#SOSGIT_TITLE_SUPPRESS=false\n#\n## Text\n## DEFAULT: false\n## This prints the branding\n## at startup in normal text.\n#SOSGIT_TITLE_TEXT=false\n\n# Temp\n# DEFAULT: /dev/shm\n# The temporary directory.\n# NO TRAILING SLASH AT THE END!\n#SOSGIT_TMP=/dev/shm\n\n# Repository save directory\n# DEFAULT: \$HOME/.sostools/git/repos\n# The directory where your downloaded\n# repositories are stored.\n# NO TRAILING SLASH AT THE END!\n# NO ~, USE \$HOME INSTEAD!\n#SOSGIT_REPOS=\$HOME/.sostools/git/repos\n\n# Internet\n## Update URL\n## DEFAULT: https://staropensource.ddns.net\n##          /git/staropensource/sostools\n##          /raw/branch/master/sos-git.sh\n## The update URL, from where sos-git gets\n## updates. The save location will be\n## determined from the command line arguments.\n#SOSGIT_UPDATEURL=https://staropensource.ddns.net/git/staropensource/sostools/raw/branch/master/sos-git.sh\n#\n## Request string\n## DEFAULT: https://staropensource.ddns.net\n##          /git/%s/%s\n## String is used for making requests and\n## downloading repositories. First %s is user,\n## second %s is the repository.\n## NO TRAILING SLASH AT THE END!\n#SOSGIT_REQUESTSTRING=https://staropensource.ddns.net/git/%s/%s\n#\n## Remote request string\n## DEFAULT: https://%s:%s@staropensource.ddns.net/%s/%s## String is used for remoteauth, that updates\n## the remote string in git. First %s is username,\n## second %s is password, third %s is user and\n## fourth %s is the repository.\n## NO TRAILING SLASH AT THE END!\n#SOSGIT_REQUESTSTRING_REMOTE=https://%s:%s@staropensource.ddns.net/%s/%s\n"
	return "0"
}
function doUserSetup() {
	if [ "$1" == "force" ] || [ ! "$SOSGIT_SETUP_USER" == "true" ]; then
		echo "Starting user setup"
		mkdir "$HOME/.sostools/git/sos-git.conf.d" -p
		getDefaultConfiguration
		echo -e "$SOSGIT_EXITSTRING" &> $HOME/.sostools/git/sos-git.conf
		echo -e "# DO NOT DELETE OR MODIFY THIS FILE\nSOSGIT_SETUP_USER=true" &> $HOME/.sostools/git/sos-git.conf.d/setup.conf
		echo "Applying new changes"
		loadUserConfiguration
	fi
}
function doSystemSetup() {
	if [ "$1" == "force" ] || [ ! "$SOSGIT_SETUP_SYSTEM" == "true" ] && [ "$(whoami)" == "root" ]; then
		echo "Starting system setup"
		mkdir "/etc/sostools/git/sos-git.conf.d" -p
		getDefaultConfiguration
		echo -e "$SOSGIT_EXITSTRING" &> /etc/sostools/git/sos-git.conf
		echo -e "# DO NOT DELETE OR MODIFY THIS FILE\nSOSGIT_SETUP_SYSTEM=true" &> /etc/sostools/git/sos-git.conf.d/setup.conf
		echo "Applying new changes"
		loadSystemConfiguration
	fi
}
function doRepositorySetup() {
	if [ -d "$SOSGIT_REPOS" ]; then
		return "0"
	elif [ -f "$SOSGIT_REPOS" ]; then
		echo "Moving \"$SOSGIT_REPOS\" to \"$SOSGIT_REPOS.bak\""
		mv "$SOSGIT_REPOS" "$SOSGIT_REPOS.bak"
		echo "Creating repository save directory"
		mkdir -p "$SOSGIT_REPOS"
	else
		echo "Creating repository save directory"
		mkdir -p "$SOSGIT_REPOS"
	fi
}
loadDefaultConfiguration
loadSystemConfiguration
loadUserConfiguration
doSystemSetup
doUserSetup
doRepositorySetup
function translateRepo() {
	export "SOSGIT_EXITSTRING=${SOSGIT_REPOS}/$1"
}
function existRepo() {
	translateRepo "$1"
	if [ -d "$SOSGIT_EXITSTRING" ]; then
		return "0"
	else
		return "1"
	fi
}
function noRepoFound() {
	echo "ERROR: Repository \"$1\" does not exist."
	exit 9
}
function formatRequestString() {
	# dont noodle me that I shouldve used -v var. I tried, it didnt work. yes i did typos to fuck you off.
	printf "$SOSGIT_REQUESTSTRING" "$1" "$2" &> ${SOSGIT_TMP}/formatrequeststring
	export "SOSGIT_EXITSTRING=$(cat ${SOSGIT_TMP}/formatrequeststring)"
	rm -rf "${SOSGIT_TMP}/formatrequeststring"
	return
}
function formatRemoteRequestString() {
	# same here as in formatRequestString()
	printf "$SOSGIT_REQUESTSTRING_REMOTE" "$1" "$2" "$3" "$4" &> ${SOSGIT_TMP}/formatremoterequeststring
	export "SOSGIT_EXITSTRING=$(cat ${SOSGIT_TMP}/formatremoterequeststring)"
	rm -rf "${SOSGIT_TMP}/formatremoterequeststring"
	return
}
function existRepoOnline() {
	formatRequestString "$1" "$2"
	$SOSGIT_CURL "-sSLqq" "${SOSGIT_EXITSTRING}/.git/HEAD" &> /dev/null
	if [ "$?" == "0" ]; then
		return "0"
	else
		return "1"
	fi
}
function hasMakefile() {
	translateRepo "$1"
	cd "$SOSGIT_EXITSTRING"
	if [ -f "Makefile" ]; then
		return "0"
	else
		return "1"
	fi
}
function noMakefileFound() {
	echo "ERROR: Repository \"$1\" is not compatible with make."
	exit 7
}
function argumentMissing() {
	echo "ERROR: Missing arguments."
	exit 6
}
function existBranch() {
	translateRepo "$1"
	cd "$SOSGIT_EXITSTRING"
	git branch | grep "$2" &> /dev/null
	if [ "$?" == "0" ]; then
		return "0"
	else
		return "1"
	fi
}
function noBranchFound() {
	echo "ERROR: Branch \"$2\" in repository \"$1\" does not exist."
}
if [ ! "$SOSGIT_TITLE_SUPPRESS" == "true" ]; then
	if [ ! "$SOSGIT_TITLE_TEXT" == "true" ]; then
		#                           _ _
		# ___  ___  ___        __ _(_) |_
		#/ __|/ _ \/ __|_____ / _` | | __|
		#\__ \ (_) \__ \_____| (_| | | |_
		#|___/\___/|___/      \__, |_|\__|
		#                     |___/
		echo "                           _ _"
		echo " ___  ___  ___        __ _(_) |_"
		echo "/ __|/ _ \\/ __|_____ / _\` | | __|"
		echo "\\__ \\ (_) \\__ \\_____| (_| | | |_"
		echo "|___/\\___/|___/      \\__, |_|\\__|"
		echo "                     |___/"
	else
		echo "sos-git"
	fi
fi
if [ "$1" == "" ]; then
	echo "Use \"sos-git help\" for all commands."
	echo "If you want more information, use \"sos-git helpextend\"."
	exit 1
elif [ "$1" == "help" ]; then
	echo "<required> [optional]"
	echo "sos-git branch <repository>"
	echo "        build <repository>"
	echo "        shell <repository>"
	echo "        clean <repository>"
	echo "        editconf <system>"
	echo "        getrepo <repository>"
	echo "        help"
	echo "        helpextend"
	echo "        install <repository>"
	echo "        list"
	echo "        pull <repository>"
	echo "        push <repository>"
	echo "        remoteauth <repository> [user]"
	echo "        remrepo <repository>"
	echo "        selfupdate"
	echo "        upstream <repository> <branch>"
	exit 0
elif [ "$1" == "helpextend" ]; then
	echo "<required> [optional]"
	echo "command    | args | description"
	echo "branch     | <repository>               | list all branches"
	echo "build      | <repository>               | build repository"
	echo "shell      | <repository>               | spawn shell in repository"
	echo "clean      | <repository>               | clean built executables"
	echo "editconf   | <system>                   | edit the configuration"
	echo "getrepo    | <user> <repository>        | clone a repository"
	echo "help       |                            | lists all commands"
	echo "helpextend |                            | lists all commands with extended information"
	echo "install    | <repository>               | install built executables"
	echo "list       |                            | lists all cloned repositories"
	echo "pull       | <repository>               | pull new updates"
	echo "push       | <repository>               | push new changes"
	echo "remoteauth | <user> <repository> [user] | update remote to include login information"
	echo "remrepo    | <repository>               | remove a cloned repository"
	echo "selfupdate |                            | update sos-git"
	echo "upstream   | <repository> <branch>      | push new changes and set branch upstream"
elif [ "$1" == "build" ]; then
	if [ "$2" == "" ]; then
		argumentMissing
	fi
	if existRepo "$2"; then
		if hasMakefile "$2"; then
			translateRepo "$2"
			cd "$SOSGIT_EXITSTRING"
			echo "Building repository \"$2\""
			$SOSGIT_MAKE -j$(nproc) build
			exit "$?"
		else
			noMakefileFound "$2"
		fi
	else
		noRepoFound "$2"
	fi
elif [ "$1" == "shell" ]; then
	if [ "$2" == "" ]; then
		argumentMissing
	fi
	if existRepo "$2"; then
		translateRepo "$2"
		cd "$SOSGIT_EXITSTRING"
		$SOSGIT_SHELL
		exit "$?"
	else
		noRepoFound "$2"
	fi
elif [ "$1" == "clean" ]; then
	if [ "$2" == "" ]; then
		argumentMissing
	fi
	if existRepo "$2"; then
		if hasMakefile "$2"; then
			translateRepo "$2"
			cd "$SOSGIT_EXITSTRING"
			echo "Cleaning repository \"$2\""
			$SOSGIT_MAKE -j$(nproc) clean
			exit "$?"
		else
			noMakefileFound "$2"
		fi
	else
		noRepoFound "$2"
	fi
elif [ "$1" == "editconf" ]; then
	if [ "$2" == "" ]; then
		argumentMissing
	fi
	if [ "$2" == "true" ]; then
		if [ "$(whoami)" == "root" ]; then
			collectFiles "/etc/sostools/git/sos-git.conf.d/"
			$SOSGIT_EDITOR "/etc/sostools/git/sos-git.conf" $SOSGIT_EXITSTRING
		else
			echo "ERROR: You aren't root."
			exit "2"
		fi
	elif [ "$2" == "false" ]; then
		collectFiles "$HOME/.sostools/git/sos-git.conf"
		$SOSGIT_EDITOR "$HOME/.sostools/git/sos-git.conf" $SOSGIT_EXITSTRING
	else
		echo "ERROR: Invalid boolean."
	fi
elif [ "$1" == "getrepo" ]; then
	if [ "$2" == "" ] || [ "$3" == "" ]; then
		argumentMissing
	fi
	if existRepoOnline "$2" "$3"; then
		translateRepo ""
		cd "$SOSGIT_EXITSTRING"
		formatRequestString "$2" "$3"
		echo "Cloning repository"
		$SOSGIT_GIT clone "$SOSGIT_EXITSTRING" "$3"
		cd "$3"
		echo "Cloning submodules"
		$SOSGIT_GIT submodule update --init --force --recursive
	else
		noRepoFound "$3"
	fi
elif [ "$1" == "install" ]; then
	if [ "$2" == "" ]; then
		argumentMissing
	fi
	if existRepo "$2"; then
		if hasMakefile "$2"; then
			translateRepo "$2"
			cd "$SOSGIT_EXITSTRING"
			echo "Installing repository \"$2\""
			$SOSGIT_MAKE -j$(nproc) install
			exit "$?"
		else
			noMakefileFound "$2"
		fi
	else
		noRepoFound "$2"
	fi
elif [ "$1" == "pull" ]; then
	if [ "$2" == "" ]; then
		argumentMissing
	fi
	if existRepo "$2"; then
		translateRepo "$2"
		cd "$SOSGIT_EXITSTRING"
		echo "Pulling new changes"
		$SOSGIT_GIT pull
		exit "$?"
	else
		noRepoFound "$2"
	fi
elif [ "$1" == "push" ]; then
	if [ "$2" == "" ]; then
		argumentMissing
	fi
	if existRepo "$2"; then
		translateRepo "$2"
		cd "$SOSGIT_EXITSTRING"
		echo "Pushing new changes"
		$SOSGIT_GIT push
		exit "$?"
	else
		noRepoFound "$2"
	fi
elif [ "$1" == "remoteauth" ]; then
	if [ "$2" == "" ] || [ "$3" == "" ]; then
	argumentMissing
	fi
	if existRepo "$3"; then
		translateRepo "$3"
		cd "$SOSGIT_EXITSTRING"
		echo "You are now required to enter your StarOpenGit credentials. If you are using 2FA, use a Application Token as a password."
		if [ "$4" == "" ]; then
			echo -n "Enter username: "
			read -r "SOSGIT_USERNAME"
		else
			export "SOSGIT_USERNAME=$4"
		fi
		echo -n "Enter password: "
		read -r -s "SOSGIT_PASSWD"
		echo "********"
		git remote remove origin
		formatRemoteRequestString "$SOSGIT_USERNAME" "$SOSGIT_PASSWD" "$2" "$3"
		git remote add origin "$SOSGIT_EXITSTRING"
		echo -e "\nClearing variables containing password"
		export "SOSGIT_PASSWD="
		export "SOSGIT_EXITSTRING="
		echo "Updated remote for repository \"$3\""
	else
		noRepoFound "$3"
	fi
elif [ "$1" == "selfupdate" ]; then
	echo "Updating sos-git to \"$0\""
	$SOSGIT_CURL "-sSLqq" "$SOSGIT_UPDATEURL" -O "$0"
elif [ "$1" == "list" ]; then
	translateRepo ""
	$SOSGIT_LS -A -h "$SOSGIT_EXITSTRING"
elif [ "$1" == "remrepo" ]; then
	if [ "$2" == "" ]; then
		argumentMissing
	fi
	if existRepo "$2"; then
		translateRepo "$2"
		echo "Removing repository \"$2\""
		rm -rf "$SOSGIT_EXITSTRING"
	else
		noRepoFound "$2"
	fi
elif [ "$1" == "upstream" ]; then
	if [ "$2" == "" ] || [ "$3" == "" ]; then
		argumentMissing
	fi
	if existRepo "$2"; then
		translateRepo "$2"
		cd "$SOSGIT_EXITSTRING"
		if existBranch "$2" "$3"; then
			echo "Pushing new changes and making branch \"$3\" upstream."
			git push "--set-upstream" "origin" "$3"
		else
			noBranchFound "$2" "$3"
		fi
	else
		noRepoFound "$2"
	fi
elif [ "$1" == "branch" ]; then
	if [ "$2" == "" ]; then
		argumentMissing
	fi
	if existRepo "$2"; then
		translateRepo "$2"
		cd "$SOSGIT_EXITSTRING"
		git branch
	else
		noRepoFound "$2"
	fi
else
	argumentMissing
fi